sourceInfo field in RAS LRQ messages

Hi,

The H.225.0 (v2) standard describes the sourceInfo field in RAS LRQ messages as follows:

sourceInfo - indicates the sender of the LRQ. The gatekeeper can use this information to decide how to respond to the LRQ.

A gatekeeper recieves an ARQ and wishes to resolve the called endpoint by sending an LRQ to neighboring gatekeepers. What would you expect the gatekeeper to put in the sourceInfo field of the LRQ ?

Several answers come to mind: a. The source info of the calling endpoint (copied from the srcInfo field of the RAS ARQ message). b. Some info identifying the gatekeeper itself. c. Nothing at all or anything at all ?

Any help is greatly appreciated. Regards, Meir.